Leases (Summary of Other Lease Information) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Operating cash flows from operating leases	$ (26,808)	$ (26,109)
Operating cash flows from financing leases	43	50
Financing cash flows from financing leases	(162)	(153)
Lease right-of-use assets obtained or modified in exchange for lease obligations	$ 14,010	$ 5,993